I timed a few operations to see what they were before and after the upgrade:

Before upgrade:

Seconds to login prompt 47.8

Seconds to login 9.4

Seconds to launch safari 13.8

Seconds to launch outlook 18.4

After upgrade:

Seconds to login prompt 44.6

Seconds to login 4.3

Seconds to launch safari 2.1

Seconds to launch Outlook 2.6

The key measurements for my wife was the amount of time it was taking to launch applications. I timed Safari and Outlook, since these are her primary apps to use and the results are amazing. In fact, she laughed at how fast they launched when I first showed her.